In-game Data

[http://dragoncrown.wikia.com/wiki/Construction_Upgrade 1. Construction Upgrade]

[http://dragoncrown.wikia.com/wiki/Pricing_of_Unit_Type 2. Pricing of Unit Type]

[http://dragoncrown.wikia.com/wiki/Alliance_System 3. Alliance System]

[http://dragoncrown.wikia.com/wiki/Energy 4. Energy]